Seminole Tangelo

Assisted Swingle in the 1908-1912 USDA citrus hybridization program.

Seminole was produced in the USDA citrus-crossing program’s 1908–1912 series, conducted principally at Eustis and Glen St. Mary, Florida. Circular 181 identifies the cross as Bowen grapefruit × Dancy tangerine and gives the breeding designation CPB 52018-F-23; it does not date Seminole’s individual cross more precisely.

Florida, United States

Sources: ⁠[2]

Carrizo Citrange

Made the Washington navel orange × trifoliate orange cross that produced the zygotic seedling CPB 4-5019, later known as Troyer and Carrizo citrange.

Washington navel orange was crossed with trifoliate orange in 1909 by E. M. Savage under W. T. Swingle’s direction at the U.S. Department of Agriculture; Hodgson (1967) reports that Savage and Gardner’s later study identified the resulting zygotic seedling CPB 4-5019 as the same clone known as Carrizo and Troyer.

United States

Sources: ⁠[17]

Troyer Citrange

Made the 1909 Washington navel × Poncirus trifoliata cross.

Troyer citrange originated from a Washington navel sweet orange × Poncirus trifoliata hybridization made by E. M. Savage under the direction of Walter T. Swingle at Riverside in 1909.

Riverside, California, United States

Sources: ⁠[1]

Carrizo Citrange

Co-published evidence that Carrizo and Troyer originated from the same zygotic seedling, CPB 4-5019, rather than being sister seedlings.

Hodgson (1967) reports that Savage and Gardner presented evidence in 1965 that Carrizo and Troyer were not sister seedlings but the same zygotic clone, CPB 4-5019, from the 1909 Washington navel × trifoliate orange cross.

Sources: ⁠[17]